CN111200963A - Light source device for endoscope - Google Patents
Light source device for endoscope Download PDFInfo
- Publication number
- CN111200963A CN111200963A CN201880065686.9A CN201880065686A CN111200963A CN 111200963 A CN111200963 A CN 111200963A CN 201880065686 A CN201880065686 A CN 201880065686A CN 111200963 A CN111200963 A CN 111200963A
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- China
- Prior art keywords
- light source
- light
- endoscope
- connector
- source connector
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00112—Connection or coupling means
- A61B1/00121—Connectors, fasteners and adapters, e.g. on the endoscope handle
- A61B1/00126—Connectors, fasteners and adapters, e.g. on the endoscope handle optical, e.g. for light supply cables
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00002—Operational features of endoscopes
- A61B1/00004—Operational features of endoscopes characterised by electronic signal processing
- A61B1/00006—Operational features of endoscopes characterised by electronic signal processing of control signals
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
- A61B1/0661—Endoscope light sources
- A61B1/0669—Endoscope light sources at proximal end of an endoscope
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00112—Connection or coupling means
- A61B1/00117—Optical cables in or with an endoscope
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
- A61B1/07—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements using light-conductive means, e.g. optical fibres
Abstract
A light source device (1) for an endoscope is provided with: a light source that generates illumination light; a light source connector receiving part (11) into which a light source connector (102) is inserted and removed, the light source connector (102) being provided to a connector (101) of an endoscope (100); a light shielding unit (30) which is provided with an opening for blocking the light source connector receiving part, wherein the light shielding plate (31) is provided with a light shielding plate (31) which can be opened and closed freely; and an auxiliary unit (40) having a movable member (51), wherein the movable member (51) is in contact with the light blocking plate (31) and is interlocked with the insertion and extraction of the light source connector (102) relative to the light source connector receiving part (11), and the light blocking plate (31) is pressed in a closing direction for blocking the opening of the light source connector receiving part (11) and blocking the illumination light from the light source.
Description
Technical Field
The present invention relates to a light source device for an endoscope, which is configured to be attachable to and detachable from an endoscope connector of the endoscope and has an illumination light source built therein.
Background
Conventionally, in the medical field, endoscopes capable of observing organs and the like in a body cavity by inserting an elongated insertion portion into the body cavity have been widely used.
The endoscope has a function of irradiating illumination light into a body cavity into which external light cannot enter. The illumination light is guided into the endoscope from a light source of an endoscope light source device provided in an external device.
The endoscope has an endoscope connector that is detachable from a socket portion of the light source device for the endoscope, and the illumination light is guided to the endoscope through the endoscope connector.
Such a conventional light source device for an endoscope is disclosed in, for example, japanese patent application laid-open No. 2007-20855, and the following techniques are known: even if a light source connector (light carrier sleeve) provided in a connector of an endoscope is pulled out from a hole for connecting a light source during lighting of the light source, illumination light does not leak.
However, the illumination light from the light source of the light source device for an endoscope is very strong light, and it is necessary to shield the light source from leakage at the time of lighting.
Therefore, an openable/closable light blocking member provided in a conventional light source device for an endoscope is desired to have a structure that is reliably closed when the light source connector is pulled out from the light source connecting hole.
In view of the above, it is an object of the present invention to provide a light source device for an endoscope, comprising: when the connector of the endoscope is inserted and removed including when not in use, the light is reliably shielded so that the illumination light from the light source is not leaked even when the connector is turned on.
Disclosure of Invention
Means for solving the problems
An endoscope light source device according to an aspect of the present invention includes: a light source that generates illumination light; a light source connector receiving part for inserting and extracting a light source connector, the light source connector being provided to a connector of an endoscope; a light shielding unit in which a light shielding plate for blocking an opening of the light source connector receiving portion is disposed so as to be openable and closable; and an auxiliary unit having a movable member that is brought into contact with the light blocking plate to be interlocked with the insertion and extraction of the light source connector with respect to the light source connector receiving portion, and presses the light blocking plate in a closing direction that blocks the opening of the light source connector receiving portion and blocks the illumination light from the light source.
Drawings
Fig. 1 is a perspective view showing the structure of an endoscope and a light source device for the endoscope.
Fig. 2 is a sectional view of a connector portion provided with a light shielding unit.
Fig. 3 is a sectional view of the connector portion in a state where the connector of the endoscope is connected.
Fig. 4 is a perspective view showing the structure of the light shielding unit.
Fig. 5 is a perspective view showing the structure of the light shielding plate unit.
Fig. 6 is a sectional view showing the structure of the light shielding plate unit.
Fig. 7 is an exploded perspective view illustrating the structure of the auxiliary unit.
Fig. 8 is a perspective view showing the structure of the assist unit.
Fig. 9 is a side view showing the structure of the rotating member.
Fig. 10 is a sectional view of an initial state in which the light source connector of the endoscope is inserted into the light source connector receiving portion.
Fig. 11 is a sectional view showing a state in which a light source connector of a connector of an endoscope is inserted into a light source connector receiving portion.
Fig. 12 is a sectional view showing a state of use in which a light source connector of a connector of an endoscope is inserted into a light source connector receiving portion.
Fig. 13 is a side view showing the structure of a turning member of modification 1.
Fig. 14 is a sectional view of an initial state in which the light source connector of the endoscope of modification 1 is inserted into the light source connector receiving portion.
Fig. 15 is a sectional view showing a state in which the light source connector of the endoscope connector according to modification 1 is inserted into the light source connector receiving portion.
Fig. 16 is an exploded perspective view showing the structure of the assist unit of modification 2.
Fig. 17 is a sectional view of an initial state in which the light source connector of the endoscope of modification 3 is inserted into the light source connector receiving portion.
Fig. 18 is a sectional view showing a state of use in which the light source connector of the endoscope according to modification 3 is inserted into the light source connector receiving portion.
Fig. 19 is a sectional view of an initial state in which the light source connector of the endoscope connector according to the 4 th modification is inserted into the light source connector receiving portion.
Fig. 20 is a sectional view showing a state of use in which the light source connector of the endoscope connector according to the 4 th modification is inserted into the light source connector receiving portion.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.
In the drawings used in the following description, the respective components are sized to be recognizable on the drawings, and therefore, the scale is different for each component, and the present invention is not limited to the number of components, the shapes of components, the ratio of the sizes of components, and the relative positional relationship of components described in the drawings. In the following description, the vertical direction as viewed on the paper of the drawings may be described as the upper and lower portions of the constituent elements.
Fig. 1 is a perspective view showing the structures of an endoscope and a light source device for an endoscope, fig. 2 is a sectional view of a connector portion provided with a light shielding unit, fig. 3 is a sectional view of the connector portion in a state where a connector of the endoscope is connected, fig. 4 is a perspective view showing the structure of the light shielding unit, fig. 5 is a perspective view showing the structure of the light shielding unit, fig. 6 is a sectional view showing the structure of the light shielding unit, fig. 7 is an exploded perspective view showing the structure of an auxiliary unit, fig. 8 is a perspective view showing the structure of the auxiliary unit, fig. 9 is a side view showing the structure of a rotating member, fig. 10 is a sectional view of an initial state where a light source connector of the endoscope is inserted into a light source connector receiving portion, fig. 11 is a sectional view of a process state where a light source connector of the endoscope is inserted into a light source connector receiving portion, fig. 12 is a used state where the Cross-sectional view of (a).
The light source device 1 for an endoscope, which is a medical electronic device according to the present embodiment shown in fig. 1 and 2, is used together with an endoscope 100. The light source device 1 for an endoscope includes an image processing device which can communicate with an imaging device included in the endoscope 100 by wire or wirelessly, generates an observation image based on a signal input from the imaging device, and outputs the observation image to an image display device not shown.
The imaging device of the endoscope 100 has a configuration for imaging an optical image of a subject. Since the structure of the endoscope 100 is well known, detailed description thereof is omitted.
In the present embodiment, the light source device 1 for an endoscope includes, as an example, a socket-shaped connector portion 10 on the front panel 3 of the housing 2. The connector portion 10 is connected to a plug-like connector 101 of the endoscope 100. Further, an elongated light source connector 102 having a substantially cylindrical shape is provided extending from the connector 101.
The light source device 1 for an endoscope is electrically connected to an image pickup device provided in the endoscope 100 and having an image pickup device such as a CCD or a CMOS through a connector portion 10, and performs operation control and power supply of the image pickup device.
The light source device 1 for an endoscope includes a light source, not shown, which generates illumination light for irradiating an object of the imaging device. The light source is a halogen lamp, a xenon lamp, an LED, or the like, and the illumination light is incident on the optical fiber bundle provided in the endoscope 100 via the connector 101 of the endoscope 100 connected to the connector portion 10.
One end of the optical fiber bundle is disposed in the light source connector 102, and the other end is disposed in the distal end portion 104 of the insertion portion 103 of the endoscope 100. Then, the illumination light is irradiated from an illumination window provided at the distal end portion 104 to the subject.
The housing 2 of the light source device 1 for an endoscope is shaped like a rectangular parallelepiped box, and the connector portion 10 is disposed on the front panel 3 that is substantially erected on the floor surface in a usable posture, for example, being placed on a surface substantially parallel to the floor surface.
Here, the connector portion 10 of the endoscope light source device 1 will be described below.
As shown in fig. 2 and 3, in the connector portion 10, a substantially cylindrical light source connector receiving portion 11 is fitted to the block-shaped frame 12, and a light source connector 102 provided in a connector 101 of the endoscope 100 is inserted into and removed from the light source connector receiving portion 11. The frame 12 is provided with a heat sink 13 and the like, and the heat sink 13 is formed with a hole 14 into which the end of the light source connector 102 is inserted.
The end surface 15 inside the device of the light source connector receiving part 11 is an inclined surface inclined at a predetermined angle with respect to the longitudinal axis. The end surface 15 may be a surface in a vertical direction perpendicular to the longitudinal direction of the light source connector receiving portion 11.
The light shielding unit 20 is disposed on the frame 12, and in a state where the connector 101 of the endoscope 100 is not inserted into the connector portion 10, the light shielding unit 20 blocks the opening of the end face 15 of the light source connector receiving portion 11 and shields light from the light source.
The light blocking unit 20 is movably in contact with the light source connector 102 inserted into the light source connector receiving portion 11, and the light source connector 102 is inserted into the endoscope light source device 1.
Here, the structure of the light shielding unit 20 of the present embodiment will be described in detail below.
As shown in fig. 4, the light shielding unit 20 has: a light blocking plate unit 30 having a light blocking plate 31 that is openable and closable to block an opening of the end surface 15 of the light source connector receiving portion 11; and an auxiliary unit 40 that presses the light shielding plate 31 of the light shielding plate unit 30 in a closing direction toward the end surface 15 of the light source connector receiving portion 11 by its own weight.
As shown in fig. 5 and 6, the light shielding plate unit 30 includes a substantially rectangular light shielding plate 31 and a support plate 32 having an L-shaped cross section. The light shielding plate 31 and the support plate 32 are rotatably connected by a hinge 33.
A torsion spring 34 as an urging member is inserted into the hinge portion 33, and the light shielding plate 31 is urged by the torsion spring 34 so as to be vertically upward with respect to the support plate 32.
The support plate 32 is formed with a groove portion 35 having one side portion notched. The groove portion 35 serves to escape so that the assisting unit 40 does not come into contact. In addition, a plurality of screw holes, not shown, are bored in the bottom portion 36 bent in an L shape, and are used as a bottom surface portion for fastening screws to the frame 12.
As shown in fig. 7 and 8, the assist unit 40 includes a pivot member 50 as a movable member, and a support base 60 for supporting the pivot member 50 to pivot.
The rotating member 50 has a rotating shaft 52 provided on a main body 51 of a plate-shaped block. The body 51 has an abutting end 54 at an upper end thereof, and an arc-shaped recess 53 is formed below the pivot 52.
The abutment end 54 is a portion that abuts against the shade plate 31. The concave portion 53 is formed to avoid contact with the support plate 32 of the shade unit 30 when the main body 51 rotates about the rotation shaft 52. Further, the lower portion of the main body 51 enters the groove portion 35 formed in the support plate 32 of the shade unit 30, thereby avoiding contact with the shade unit 30.
The support base 60 has 2 arm portions 62 and 63 extending at a predetermined distance from each other on the upper side of the base main body portion 61, and pivot holding grooves 64 and 65 are formed in the 2 arm portions 62 and 63, and the pivot shafts 52 of the pivot members 50 are fitted in the pivot holding grooves 64 and 65.
These rotation holding grooves 64 and 65 are formed as circular arc surfaces having a groove width slightly smaller than the diameter of the rotation shaft 52 and a groove bottom portion having substantially the same size as the outer periphery of the rotation shaft 52. That is, the rotating shaft 52 is pushed into the groove bottoms of the rotation holding grooves 64 and 65, and thereby the rotating member 50 is held rotatably without falling off the support base 60.
Further, the support base 60 has a groove 67 along the surface of the 2 arm portions 62 and 63 facing each other to accommodate the lower portion of the rotating member 50, and an optical sensor 68 as a detection portion is incorporated through the groove 67.
The light sensor 68 is electrically connected to a control unit, not shown, provided in the light source device 1 for an endoscope. The optical sensor 68 detects the main body 51 of the rotary member 50 movable in the groove 67 of the support base 60, and outputs the detection result to the control unit.
As shown in fig. 9, the pivot member 50 has a center of gravity G set vertically below the pivot shaft 52, and is set in a posture in which the contact end 54 of the main body 51 is positioned at the upper portion by its own weight in a state of being assembled to the support base 60.
As shown in fig. 4, the assist unit 40 in which the turning member 50 is assembled to the support base 60 is fixed to the frame 12 by screw fastening or the like so that the turning member 50 of the assist unit 40 is brought into contact with the outside of the region where the light shielding plate 31 of the light shielding plate unit 30 is brought into contact with the end surface 15 of the light source connector receiving portion 11.
Next, the operation of the light shielding unit 20 when the connector 101 of the endoscope 100 is inserted into and removed from the connector portion 10 of the light source device 1 for endoscope configured as described above will be described.
As shown in fig. 10, in an initial state in which the light source connector 102 is not in contact with the light shielding plate 31 of the light shielding plate unit 30 at the time of insertion and extraction (including the time of non-use) of the light source connector 102 of the connector 101 of the endoscope 100 into and from the light source connector receiving portion 11, a stress that rotates in a direction in which the contact end portion 54 of the main body portion 51 is brought into contact with and pushed up from the light shielding plate 31 is generated by the own weight of the rotating member 50 in addition to the biasing force of the torsion spring 34.
Thereby, the light shielding plate 31 is pressed in the closing direction toward the end surface 15 of the light source connector receiving portion 11, and the opening of the light source connector receiving portion 11 is closed. Thus, illumination light at the time of lighting of the light source is reliably shielded from light and does not leak from the light source connector receiving portion 11.
As shown in fig. 11, in a state in which the light source connector 102 is inserted into or removed from the light source connector receiving portion 11, the light source connector 102 contacts the light shielding plate 31, and the light shielding plate 31 is separated from the end surface 15 of the light source connector receiving portion 11 and is rotated against the stress of the rotation due to the biasing force of the torsion spring 34 and the self weight of the rotating member 50.
As shown in fig. 12, in a use state in which the light source connector 102 is inserted into the light source connector receiving portion 11 and the connector 101 of the endoscope 100 is connected to the connector portion 10 of the light source device 1 for endoscope, the light blocking plate 31 is urged to rotate so as to fall downward against the stress of rotation due to the urging force of the torsion spring 34 and the self weight of the rotating member 50.
At this time, the optical sensor 68 provided in the support base 60 detects that the lower end portion of the main body portion 51 is in the open state in which the lower end portion is removed from the groove portion 67 of the support base 60 by the rotation of the rotating member 50, and thereby detects that the connector 101 of the endoscope 100 is connected to the connector portion 10.
When the lower end portion of the main body 51 is positioned in the groove 67 of the support base 60, the state in which the connector 101 and the connector portion 10 of the endoscope 100 are not connected is detected as the closed state of the optical sensor 68.
The light source device 1 for an endoscope may be configured to control turning ON/OFF (ON/OFF) of the light source based ON a detection result of the optical sensor 68 detecting a connected/disconnected state of the connector 101 and the connector portion 10 of the endoscope 100.
As described above, the light source device 1 for an endoscope according to the present embodiment is configured such that, even when the light source is turned on in the initial state when not in use and when the connector 101 of the endoscope 100 is inserted and removed, the light blocking plate 31 of the light blocking plate unit 30 receives the stress of rotation generated by the biasing force of the torsion spring 34 and the self weight of the rotating member 50 and abuts against the end surface 15 of the light source connector receiving portion 11 to block light, and therefore, the illumination light is reliably prevented from leaking.
Even if the biasing force is weakened or lost due to a failure of the torsion spring 34, the auxiliary unit 40 rotates the light shielding plate 31 so as to push up the light shielding plate 31 by the self weight of the rotating member 50, and the opening of the light source connector receiving portion 11 is closed.
On the other hand, even if the auxiliary unit 40 causes a failure or the like to weaken or disappear the stress for pushing up the light shielding plate 31, the light shielding plate 31 is rotated to push up the light shielding plate 31 by the biasing force of the torsion spring 34 of the light shielding plate unit 30, and the opening of the light source connector receiving portion 11 is closed.
In this way, the light source device 1 for an endoscope is configured such that, when the connector 101 of the endoscope 100 including the unused time is inserted and removed, the light blocking unit 20 which presses the light blocking plate 31 and blocks the opening of the light source connector receiving portion 11 can reliably block light so that illumination light from the light source at the time of lighting is not leaked.
The light blocking plate unit 30 does not necessarily have to be provided with the torsion spring 34 that biases the light blocking plate 31 in the direction of closing the opening of the light source connector receiving part 11. That is, the light shielding plate 31 may be configured to be rotated in a direction to close the opening of the light source connector receiving portion 11 only by the auxiliary unit 40 being applied with stress.
(modification 1)
Fig. 13 is a side view showing the configuration of a turning member of modification 1, fig. 14 is a sectional view showing an initial state in which a light source connector of a connector of an endoscope of modification 1 is inserted into a light source connector receiving portion, and fig. 15 is a sectional view showing a used state in which a light source connector of a connector of an endoscope of modification 1 is inserted into a light source connector receiving portion.
As shown in fig. 13, in the pivot member 50, in contrast to the above-described embodiment, the contact end portion 54 of the main body portion 51 may be provided on the lower side of the pivot shaft 52, the center of gravity G may be set on the vertically lower side of the pivot shaft 52, and the contact end portion 54 may be brought into a posture of being positioned lower by its own weight in a state of being assembled to the support base 60.
By using such a rotating member 50, as shown in fig. 14, the light shielding unit 20 can be disposed on the upper side of the connector portion 10, contrary to the above-described embodiment.
Here, in an initial state in which the light source connector 102 is not in contact with the light shielding plate 31 of the light shielding plate unit 30 at the time of insertion and extraction (including the time of non-use) of the light source connector 102 of the connector 101 of the endoscope 100 into and from the light source connector receiving portion 11, a stress that is generated by the biasing force of the torsion spring 34 and the self weight of the light shielding plate 31 and also a stress that is rotated in a direction in which the contact end portion 54 of the main body portion 51 is brought into contact with and pushed down the light shielding plate 31 is generated by the self weight of the rotating member 50.
As shown in fig. 15, in a use state in which the light source connector 102 is inserted into the light source connector receiving portion 11 and the connector 101 of the endoscope 100 is connected to the connector portion 10 of the light source device 1 for endoscope, the light blocking plate 31 is urged to rotate so as to be lifted upward against the stress due to the urging force of the torsion spring 34, the own weight of the light blocking plate 31, and the own weight of the rotating member 50.
In this way, the position of the light shielding unit 20 can be changed to the upper side (this modification) or the lower side (the above-described embodiment) of the connector portion 10 according to the position of the center of gravity G of the rotating member 50 with respect to the rotating shaft 52.
Thus, the light source device 1 for an endoscope can selectively determine the installation position of the light shielding unit 20 on the upper side or the lower side of the connector portion 10 in accordance with the space of the layout restricted by the built-in components.
(modification 2)
Fig. 16 is an exploded perspective view showing the structure of the assist unit of modification 2.
As shown in fig. 16, in the assist unit 40, a torsion spring 55 may be provided on the pivot shaft 52, and the torsion spring 55 is a biasing member that biases the pivot member 50 in a direction in which the contact end 54 of the main body 51 contacts the light shielding plate 31. The main body 51 is provided with a projection 56 for locking one end of the torsion spring 55, and the support base 60 is also provided with a projection, not shown, for locking the other end of the torsion spring 55.
Accordingly, in the auxiliary unit 40, the stress that the contact end 54 of the main body 51 contacts the light shielding plate 31 to rotate increases, and the opening of the light source connector receiving portion 11 can be more reliably blocked by the light shielding plate 31 to shield light.
(modification 3)
Fig. 17 is a sectional view of an initial state in which the light source connector of the endoscope connector of modification 3 is inserted into the light source connector receiving portion, and fig. 18 is a sectional view of a used state in which the light source connector of the endoscope connector of modification 3 is inserted into the light source connector receiving portion.
As shown in fig. 17 and 18, the assist unit 70 here includes a compression coil spring 72, and the compression coil spring 72 is a biasing member that biases the vertical translation member 71 as a movable member, and the vertical translation member 71 abuts against the light shielding plate 31 to close the opening of the light source connector receiving portion 11 in accordance with the biasing force of the torsion spring 34 of the light shielding plate unit 30.
Specifically, the assist unit 70 here has an outer case 73, and the outer case 73 is a retaining member that guides the vertical linear motion member 71 to move straight and prevents the vertical linear motion member from coming off.
The vertical translation member 71 is biased in a direction protruding from the outer housing 73 by a compression coil spring 72, and includes an abutting portion 74 abutting against the shade plate 31, and a projecting portion 75 extending in the horizontal direction from the side opposite to the abutting portion 74. Further, a light sensor 76 as a detection unit for detecting the protrusion 75 is provided.
In the assist unit 70, in a state shown in fig. 17 in which the vertical translation member 71 is projected from the outer case 73 by the biasing force of the compression coil spring 72, the light shielding plate 31 in contact with the contact portion 74 is pushed up so as not to rotate downward, and the opening of the light source connector receiving portion 11 is blocked. At this time, the protrusion 75 is located at a position where the optical sensor 76 is in an open state, and detects that the connector 101 of the endoscope 100 is not connected to the connector section 10.
In the auxiliary unit 70, in a use state in which the light source connector 102 shown in fig. 18 is inserted into the light source connector receiving portion 11 and the connector 101 of the endoscope 100 is connected to the connector portion 10 of the light source device 1 for endoscope, the vertical translation member 71 is accommodated in the outer housing 73 against the biasing force of the compression coil spring 72, and the light shielding plate 31 is rotated downward. At this time, the protrusion 75 moves to turn off the optical sensor 76, thereby detecting that the connector 101 of the endoscope 100 is connected to the connector section 10.
In this way, the assist unit 70 is configured such that the opening of the light source connector receiving portion 11 is closed by the light blocking plate 31 and light is blocked by biasing the vertical translation member 71 with the compression coil spring 72 in addition to the biasing force of the torsion spring 34 of the light blocking plate unit 30.
Even with such a configuration, the light source device 1 for an endoscope is configured such that, when the connector 101 of the endoscope 100 is inserted and removed including when not in use, the light blocking unit 20 is used to reliably block light so that illumination light from the light source does not leak when lit, and the light blocking unit 20 is configured such that the opening of the light source connector receiving portion 11 is closed by biasing the light blocking plate 31 with the assist unit 70 in addition to the biasing force of the torsion spring 34 of the light blocking plate unit 30.
Although the configuration in which the auxiliary unit 70 is provided below the connector portion 10 is illustrated here, the auxiliary unit 70 may be provided above the connector portion 10 as in modification 1.
(modification 4)
Fig. 19 is a sectional view of an initial state in which the light source connector of the endoscope connector of the 4 th modification is inserted into the light source connector receiving portion, and fig. 20 is a sectional view of a used state in which the light source connector of the endoscope connector of the 4 th modification is inserted into the light source connector receiving portion.
As shown in fig. 19 and 20, the auxiliary unit 80 here has a plate spring 81 as a movable member, the plate spring 81 is a biasing member having a plurality of folded portions, and the plate spring 81 abuts against the light shielding plate 31 to close the opening of the light source connector receiving portion 11 in accordance with the biasing force of the torsion spring 34 of the light shielding plate unit 30. Further, a light sensor 83 as a detection unit for detecting the end 82 of the plate spring 81 is provided.
The assist unit 80 enters the following state shown in fig. 19: the plate spring 81 is brought into contact with the light shielding plate 31 by the biasing force of the plate spring 81, the light shielding plate 31 is pushed up and is not rotated downward, and the opening of the light source connector receiving portion 11 is closed. At this time, the end 82 of the plate spring 81 is positioned so as to open the optical sensor 83, and detects that the connector 101 of the endoscope 100 is not connected to the connector section 10.
In the auxiliary unit 80, in a use state in which the light source connector 102 shown in fig. 20 is inserted into the light source connector receiving portion 11 and the connector 101 of the endoscope 100 is connected to the connector portion 10 of the light source device 1 for endoscope, the light blocking plate 31 is rotated downward against the urging force of the plate spring 81. At this time, the end 82 of the plate spring 81 moves to close the optical sensor 83, thereby detecting that the connector 101 of the endoscope 100 is connected to the connector portion 10.
In this way, the assist unit 80 is configured to block the opening of the light source connector receiving portion 11 with the light blocking plate 31 by the plate spring 81 in addition to the biasing force of the torsion spring 34 of the light blocking plate unit 30.
Even with such a configuration, the light source device 1 for an endoscope is configured such that, when the connector 101 of the endoscope 100 is inserted and removed including when not in use, the light blocking unit 20 is configured to reliably block light so that illumination light from the light source does not leak when lit, and the light blocking unit 20 is configured such that the auxiliary unit 90 biases the light blocking plate 31 to close the opening of the light source connector receiving portion 11 in addition to the biasing force of the torsion spring 34 of the light blocking plate unit 30.
Although the configuration in which the auxiliary unit 80 is provided below the connector portion 10 is also illustrated here, the auxiliary unit 80 may be provided above the connector portion 10 as in modification 1.
The invention described in the above embodiments is not limited to these embodiments, and various modifications can be made in the implementation stage without departing from the gist thereof. Further, the above-described embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed structural elements.
For example, in the case where the above-described problem can be solved and the above-described effect can be obtained even if a plurality of constituent elements are deleted from all the constituent elements shown in the respective modes, the configuration in which the constituent elements are deleted can be extracted as an invention.
According to the present invention, the following light source device for an endoscope can be realized: when the connector of the endoscope is inserted and removed including when not in use, the light is reliably shielded so that the illumination light from the light source is not leaked even when the connector is turned on.
The application is applied on the basis of the priority claim of Japanese special application No. 2017-214808 applied in Japan on 11/7/2017, and the disclosures are cited in the specification and the claims of the application.
Claims (6)
1. A light source device for an endoscope, comprising:
a light source that generates illumination light;
a light source connector receiving part for inserting and extracting a light source connector, the light source connector being provided to a connector of an endoscope;
a light shielding unit in which a light shielding plate for blocking an opening of the light source connector receiving portion is disposed so as to be openable and closable; and
and an auxiliary unit having a movable member that is pressed in a closing direction to close the opening of the light source connector receiving portion and block the illumination light from the light source, the movable member being in contact with the light blocking plate and being interlocked with the insertion and extraction of the light source connector with respect to the light source connector receiving portion.
2. The light source device for an endoscope according to claim 1,
the light shielding unit has a 1 st biasing member that biases the light shielding plate in the closing direction that closes the opening of the light source connector receiving portion.
3. The light source device for an endoscope according to claim 1,
the movable member is rotatably provided, and the center of gravity thereof is set on the vertically lower side of the rotation shaft, whereby the light shielding plate is pressed in the closing direction closing the opening of the light source connector receiving portion by its own weight.
4. The light source device for an endoscope according to claim 1,
the auxiliary unit includes a 2 nd biasing member that biases the movable member in a direction in which the light shielding plate is pressed in the closing direction that closes the opening of the light source connector receiving portion.
5. The light source device for an endoscope according to claim 1,
the light source device for an endoscope includes a detection unit that detects movement of the movable member corresponding to insertion and removal of the light source connector with respect to the light source connector receiving unit.
6. The light source device for an endoscope according to claim 5,
the light source device for an endoscope includes a control unit that controls turning on/off of the light source based on a detection result of the detection unit.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017214808 | 2017-11-07 | ||
| JP2017-214808 | 2017-11-07 | ||
| PCT/JP2018/026591 WO2019092924A1 (en) | 2017-11-07 | 2018-07-13 | Endoscope light source device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111200963A true CN111200963A (en) | 2020-05-26 |
Family
ID=66438828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880065686.9A Pending CN111200963A (en) | 2017-11-07 | 2018-07-13 | Light source device for endoscope |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20200260936A1 (en) |
| CN (1) | CN111200963A (en) |
| WO (1) | WO2019092924A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112826423A (en) * | 2020-12-31 | 2021-05-25 | 西安申兆光电科技有限公司 | Aperture assembly |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021100186A1 (en) * | 2019-11-21 | 2021-05-27 | オリンパス株式会社 | Light source device for endoscope |
| JP2022071743A (en) * | 2020-10-28 | 2022-05-16 | パナソニックＩｐマネジメント株式会社 | Light source device, detection unit, optical system, endoscope, and industrial microscope |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07184857A (en) * | 1993-12-28 | 1995-07-25 | Olympus Optical Co Ltd | Endoscope system |
| JP2002136479A (en) * | 2000-11-02 | 2002-05-14 | Olympus Optical Co Ltd | Light source unit |
| US20070088193A1 (en) * | 2004-05-24 | 2007-04-19 | Koji Omori | Light source device for endoscope |
| JP2009201543A (en) * | 2008-02-26 | 2009-09-10 | Fujinon Corp | Endoscope system |
| JP2012070981A (en) * | 2010-09-29 | 2012-04-12 | Hoya Corp | Light source device for endoscope |
-
2018
- 2018-07-13 WO PCT/JP2018/026591 patent/WO2019092924A1/en active Application Filing
- 2018-07-13 CN CN201880065686.9A patent/CN111200963A/en active Pending
-
2020
- 2020-05-04 US US16/865,453 patent/US20200260936A1/en not_active Abandoned
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07184857A (en) * | 1993-12-28 | 1995-07-25 | Olympus Optical Co Ltd | Endoscope system |
| JP2002136479A (en) * | 2000-11-02 | 2002-05-14 | Olympus Optical Co Ltd | Light source unit |
| US20070088193A1 (en) * | 2004-05-24 | 2007-04-19 | Koji Omori | Light source device for endoscope |
| JP2009201543A (en) * | 2008-02-26 | 2009-09-10 | Fujinon Corp | Endoscope system |
| JP2012070981A (en) * | 2010-09-29 | 2012-04-12 | Hoya Corp | Light source device for endoscope |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112826423A (en) * | 2020-12-31 | 2021-05-25 | 西安申兆光电科技有限公司 | Aperture assembly |
| CN112826423B (en) * | 2020-12-31 | 2024-04-23 | 上海澳华内镜股份有限公司 | Aperture component |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019092924A1 (en) | 2019-05-16 |
| US20200260936A1 (en) | 2020-08-20 |
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